singaporeolevelmaths
Simple Tips for Better Maths Results!
It is simple to follow the steps of solving a cubic equation which includes finding the linear factor by using calculator and the quadratic factor by long division or comparing coefficient.
However, when the question is asked in another manner in which the solutions are given and the polynomial equation is to be formed. Some students might be at a lost of how to start the question.
I share with you on how we approach this style of question below:
For many Secondary 3 A-Maths students, this topic called Factor - Remainder theorem or Polynomials is usually introduced in the first 3 months of the year.
In this topic, they are introduced to the method to find the factors of a cubic equation so that it can be solved. They also learnt when and how to use Remainder theorem to find the remainder when a dividend is divided by a divisor.
They also know to rewrite an expression into function f(x).
In the following two videos, I use less than 6 minutes to bring across the concepts of Factor theorem and Remainder theorem.
I hope through these videos, you will have a better understanding of these two concepts.
Also, I have included a page which contains all the O-Level Maths videos I have produced since 2007.